Hi didonato,
That's interesting. Now that I've looked at the error message again, I see a piece I missed before: "Item Analysis Error." This type of error occurs when a select statement is selects values from another table. This restriction is a security enhancement added in a previous service pack of Aras Innovator (11 SP7 or SP8, I believe). It is possible to whitelist specific queries to avoid this type of error.
Have you previously whitelisted any queries in your code tree? (check Innovator\Server\App_Data) That might explain why certain properties work but not "customer".
Eli
Eli Donahue
Aras Labs Software Engineer